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| 1 | Low-complexity online correction and calibration of pedestrian dead reckoning using map matching and GPS显示文摘Dead Reckoning is a relative positioning scheme that is used to infer the change of position relative to a point of origin by measuring the traveled distance and orientation change.Pedestrian Dead Reckoning(PDR)applies this concept to walking persons.The method can be used to track someone's movement in a building after a known landmark like the building's entrance is registered.Here,the movement of a foot and the corresponding direction change is measured and summed up,to infer the current position.Measuring and integrating the corresponding physical parameters,e.g.using inertial sensors,introduces small errors that accumulate quickly into large distance errors.Knowledge of a buildings geography may reduce these errors as it can be used to keep the estimated position from moving through walls and onto likely paths.In this paper,we use building maps to improve localization based on a single foot-mounted inertial sensor.We describe our localization method using zero velocity updates to accurately compute the length of individual steps and a Madgwick filter to determine the step orientation.Even though the computation of individual steps is quite accurate,small errors still accumulate in the long term.We show how correction algorithms using likely and unlikely paths can rectify errors intrinsic to pedestrian dead reckoning tasks,such as orientation and displacement drift,and discuss restrictions and disadvantages of these algorithms.We also present a method of deriving the initial position and orientation from GPS measurements.We verify our PDR correction methods analyzing the corrected and raw trajectories of six participants walking four routes of varying length and complexity through an office building,walking each route three times.Our quantitative results show an endpoint accuracy improvement of up to 60%when using likely paths and 23%when using unlikely paths.However,both approaches can also decrease accuracy in certain scenarios.We identify those scenarios and offer further ideas for improving Pedestrian Dead Reckoning methods. | Fabian Hölzke Johann-P.Wolff Frank Golatowski Christian Haubelt | 2019 | Geo-Spatial Information Science2019，22，2： | 2 |
| 2 | Variables influencing Multiplate whole blood impedance platelet aggregometry and turbidimetric platelet aggregation in healthy individuals显示文摘 | Seyfert UT Haubelt H Vogt A | 2007 | Platelets2007，18，3： | 1 |
| 3 | Initial population construction for convergence improvement of moeas显示文摘 | Haubelt C Gamenik J Teich J | 2005 | In Coello C Aguirre A Zitzler E eds:Evolutionary Multicritenion Optimization EMO''20052005，3410，： | 1 |
| 4 | Temperature treatment of nano-scaled barium titanate filler to improve the dielectric properties of high-κ polymer based composites显示文摘 | Schumacher B GeBwein H HauBelt J et ol | 2010 | Microelectronic Engineering2010，87，10： | 1 |
| 5 | The impact of the intensity ofserial automated plasmapheresis and the speed of deep - freezing on thequality of plasma显示文摘 | Hellstem P Bach J Haubelt H | 2001 | Transfusion2001，41，12： | 1 |
| 6 | Indications for plasma in massive transfusion 显示文摘 | Hellstern P Haubelt H | 2002 | Thromb Res2002，107，1： | 1 |
| 7 | Can platelet function tests predict the clinical efficacy of aspirin? 显示文摘 | Haubelt H Anders C Hellstern P | 2005 | Semin Thromb Hemost2005，31，4： | 1 |
| 8 | The quality of plasma col- lected by automated apheresis and of recovered plasma from leu kodepleted whole blood显示文摘 | Runkel S Haubelt H Hitzler W | 2005 | Transfusion2005，45，3： | 1 |
| 9 | Manufacture and composition of fresh frozen plasma and virus- inactivated therapeutic plasma preparations: correlation between composition and therapeutic efficacy显示文摘 | Peter Hellstern Hannelore Haubelt | 2002 | Thrombosis Research2002，107，31： | 1 |
| 10 | Various repli-cation techniques for manufacturing three-dimensional metal microstructure显示文摘 | THIES A WILLMER H HAUBELT J | 1997 | Microsystem Technol1997，，4： | 1 |
| 11 | Indicationa for plasma in massive transfusion 显示文摘 | Haubelt H | 2002 | Thromb Res2002，107，1： | 1 |
| 12 | Can platelet function tests predict the clinical efficacy of aspirin?显示文摘 | Anders C Hellstern P | 2005 | Semin Thromb Hemost2005，31，4： | 1 |
| 13 | A prospective trial on the safety of long-term intensive plasmapheresis in donors 显示文摘 | Bechtloff S Tran-My B Haubelt H | 2005 | Vox Sang2005，88，3： | 1 |
| 14 | Indicationa for plasma in massive transfusiong显示文摘 | Hellstern P Haubelt H | | 0，，1： | 1 |
| 15 | Indications for plasma in massive transfusion 显示文摘 | Hellstem P Haubelt H | 2002 | Thromb Res2002，107，1： | 1 |
| 16 | The quality of plasma collected by automated apheresis and of recovered plasma from leukodepleted whole blood显示文摘 | Runkel S Haubelt H Hitzler W | 2005 | Transfusion (Paris)2005，45，3： | 1 |
| 17 | Can platelet function tests predict the clinical eiffacy of aspirin 显示文摘 | HAUBELT H ANDERS C HELLSTERN P | 2005 | Semin Thromb Hemost2005，31，4： | 1 |
| 18 | Can platelet function tests predict the clinical efficacy of aspirin显示文摘 | Anders C Hellstern P | 2005 | Semin Thromb Hemost2005，31，4： | 1 |
| 19 | Manufacture and composition of fresh frozen plasma and virus-inactivated therapeutic plasma preparations:correlation between composition and therapeutic efficacy显示文摘 | Hellstern P Haubelt H | 2002 | Thromb Res2002，107，1： | 1 |
| 20 | A prospec- tive trial on the safety of long-term intensive plasma- pheresis in donors 显示文摘 | Bechtloff S Tran-My B Haubelt H | 2005 | Vox Sang2005，88，3： | 1 |
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